How To Fix CA_TTE195 - External Mapping of Account Determination Key '&1' is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: CA_TTE - TTE Messages

• Message number: 195

• Message text: External Mapping of Account Determination Key '&1' is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CA_TTE195 - External Mapping of Account Determination Key '&1' is not unique ?

  The SAP error message CA_TTE195 indicates that there is a problem with the external mapping of an account determination key in the system. This error typically arises when the system finds multiple entries for the same account determination key, which should be unique. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Duplicate Entries: The primary cause of this error is the existence of multiple entries in the mapping table for the same account determination key. This can happen due to incorrect data entry or configuration.
  Configuration Issues: If the account determination keys are not properly configured in the system, it can lead to conflicts and duplication.
  Data Migration Issues: If data has been migrated from another system, it’s possible that duplicates were introduced during the migration process.
  
  Solution:
  
  
  Check for Duplicates:
  
  Go to the relevant transaction code (e.g., OBYC for account determination) and check the entries for the account determination key mentioned in the error message.
  Look for any duplicate entries and remove or correct them to ensure that each key is unique.
  
  
  
  Review Configuration:
  
  Ensure that the configuration for account determination is set up correctly. This includes checking the settings in the relevant modules (e.g., Financial Accounting, Controlling).
  If necessary, consult the configuration documentation or seek assistance from a functional consultant.
  
  
  
  Data Cleanup:
  
  If the issue arose from data migration, perform a data cleanup to remove duplicates. This may involve running reports or using data management tools to identify and resolve duplicates.
  
  
  
  Testing:
  
  After making changes, test the system to ensure that the error no longer occurs. This may involve running transactions that previously triggered the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to account determination and mapping to ensure compliance with best practices.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OBYC (Automatic Account Determination) and OBA7 (Account Assignment).
  SAP Notes: Check for any SAP Notes that may address this specific error or provide additional guidance.
  Support: If the issue persists after attempting the above solutions, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to resolve the CA_TTE195 error and ensure that your account determination keys are correctly configured and unique.